I visited a couple herbicide trial sites in orchards and vineyards yesterday and saw some interesting results that follow up on my post from February 21, 2011.  In that post, I discussed some 2010 work where we evaluated a number of residual herbicides applied in combination with a fairly high rate of glyphosate.  You can see that poster presentation from the WSSA meeting here.  As I drove past the walnut orchard trial from 2010, I had to slam on the brakes and go investigate the plot in the photo below.  



After a little investigation, I determined that our application of...

**EVENT DATE CHANGE**

Event: Weed Science School 2011
Date: Sept. 6-8, 2011 (not Sept. 19-21, 2011)
Location: UC Davis

More information will be posted on the UC Weed Research & Information Center website (http://wric.ucdavis.edu.)

UC Davis weed experts contribute to pioneering Encyclopedia of Biological Invasions


Cooperative Extension Weed Specialist Joe DiTomaso, Emeritus Professor Robert Norris, and Plant Physiologist Lars Anderson with USDA-ARS Exotic and Invasive Weeds Research are among the international experts who contributed to a soon-to-be released encyclopedia on topic at the forefront of global ecology—biological invasions, or organisms that come to live in the wrong place. This pioneering book, Encyclopedia of...

Orchard Floor Management Field Day
Demonstration and Herbicide Trial

Located at a Yolo County walnut and almond orchard
Just north of Co rd 98 and Co. rd. 30 (see map)
10 – 11 am Wednesday, April 27, 2011
1 hr CE credit

Weed Experts: Brad Hanson, Weed Specialist, Plant Sciences, UC Davis and John Roncoroni, UCCE Weed Science Farm Advisor, Napa County
Orchard Support: Carolyn DeBuse, UCCE Orchard Systems Farm Advisor, Solano and Yolo Counties

The trials were designed to evaluate premium residual herbicides plus burndown materials for dormant season application in tree nut crops. Several newer materials are being compared to the old standbys for their relative...